Update gateway config for remote stack operation. #268

Job	Run time
build (linux-amd64)	1m 12s
build (linux-x86)	1m 20s
build (linux-i386)	1m 7s
build (windows-x64)	2m 37s
build (windows-x86)	2m 5s
tools	1m 52s
runtimes (testscript)	1m 24s
test_e2e	1m 2s
containers (modelc, linux-amd64)	32s
publish (linux-amd64)	6s
containers (modelc-x86, linux-x86)	37s
docker_push (simer)	33s
publish (linux-x86)	5s
containers (simbus-sa, linux-amd64)	25s
docker_push (testscript)	24s
publish (linux-i386)	6s
publish (windows-x64)	9s
publish (windows-x86)	11s
	15m 47s

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